Tack-pulling machine.



H. LYON.

TACK PULLING MACHINE.

APPLICATION FILED JAN. 14, 1910.

1,1 19,708. Patented Dec. 1, 1914.

3 SHEETS-SHEET 1.

. 3mm gwtmeo as MW {HE NORRIS PETERS CO. PHOTO-LITHD.. WASHING/0N. D. c.

H. LYON.

TACK PULLING MACHINE APPLICATION FILED JAN.14, 1910.,

1 Q 1 1 9,708. Patented Dec. 1, 1914.

3 SHBETSSHEET 2.

'HE NORRIS PETERS CO.. FHOTOLITHO., LVASHING I'ON D. C.

H. LYON.

TACK PULLING MACHINE. APPLICATION FILED JAN; 14, 1910..

1,1 19,708. Patented Dec. 1, 1914.

8 SHEETS-SHEET 3.

THE NORRIS PETERS 50.. FHOm-LITHQ, WASHINGTUN. D.

UNITED STATES PATENT OFEIGE- HARRY LYON, OF BROCKTON, MASSACHUSETTS, ASSIGNOR, BY MESNE- ASSIGNMENTS,

TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A GOR- PORA'IION OF NEW JERSEY.

TACK-PULLING MACHINE.

Specification of Letters Patent.

Patented Dec. 1, 1914.

Application filed January 14, 1810. Serial No. 538,071.

pulling the tacks from a lasted shoe.

In a lasted shoe the tacks, which are driven through the upper and innersole to secure the upper temporarily in position, are usually pulled out by hand, or by a suitable machine, before the upper is permanently united to the innersole by stitches in a subsequent operation. If a machine be employed to extract the lasting tacks, it is desirable that the same shall be so organized that it may be run at a high rate of speed, and at the same time be capable of engaging and pulling the tacks from the shoe in a.

positive and reliable manner, and as fast as the operator can feed the shoe along and present the tacks to the tack-pulling mechanism. A type of machine which may be operated at a very high. rate of speed is one in which the tack-extracting instrumentality is given a rotatory movement, to engage and pull the tacks, and some machines have been heretofore proposed which operated in this i'nanner, and wherein the tacks were acted upon by a rotating extractor which operated to force the tacks against a stationary abutment. An objection to some of these ma chines has been that the tack-pulling move ment of the ejector was such as to pull the tacks from the shoe in a direction more or less inclined to the face of theinnersole, which had a tendency to enlarge the openings in the upper and the innersole occueXt-racting elements thereof are constructed and arranged to have a rotatory movement to cause them to engage and pull a tack, and hence may be operated at a high rate of speed, and also where such elements are so constructed and arranged as to pull each tack from the shoe in a direction which will be substantially perpendicular to the plane of the innersole. By such an arrangement, the machine is not only capable of pulling a large number of tacks in a given time, but the work will be performed in a highly satisfactory manner and without danger of injury to the upper or innersole.

A construction for imparting to the tackextracting elements the movements as thus defined, and for the purposes explained, I regard as an important feature of this invention. In accordance with this feature of the invention the machine herein selected for illustration preferably embodies two tackpulling jaws to which are imparted rotatory movements, in opposite directions, and also, in connection therewith, other movements in proper timed relation to such rotatory movements for causing the jaws to first engage a tack and then to lift it in a substantially perpendicular direction from the shoe, the jaws being thereafter separated to release the tack. Preferably, also, the rotatory movements are imparted to the jaws by suitably arranged gearing to be driven from the main driving shaft of the machine, and the other movements referred to are produced through levers upon which the jaws are carried, suitable connections with the main driving shaft being so arranged as to cause said levers to swing the jaws into and out of position for engaging and releasing the tacks. These, and other features of the invention, including important details of construction and combinations of parts, will be hereinafter more particularly described and claimed.

In the drawings Figure 1 represents a machine embodying the present invention, in front elevation. Fig. 2 represents a plan view thereof. Fig. 3 represents a side elevation of the machine, and Fig. 4 is a detail view illustrating, in perspective, the work-supporting foot and guide.

The machine frame 2, which may be provided with a base of any suitable'construction, has hearings to support the rotatable driving shaft 4, which is shown as having a pulley 5 fast thereon, to receive power through a belt from any suitable source. The shaft 4 is also shown as having fast thereon a cam block 48, provided with a cam way or groove 50, and a gear 6 which is keyed or otherwise secured to said shaft. The gear 6 meshes with a gear 8 secured upon a shaft 10, which is rotatably supported in bearings in the frame, and the shaft 10 also has fast thereon the gears 12 and 14. The gear 12 meshes with a wide gear 13 which is fast upon a shaft 16, rotatably supported in bearings in the frame, and the shaft 16 carries a gear 18 which meshes with a gear 20, secured to a shaft 22, which is similarly supported for rotation in bearings carried by the frame, and has fast thereon a cam block 44, provided with a cam way or groove 46.

1V ith the parts as thus far described, it will be seen that if power he applied through a belt to the pulley 5 to rotate the shaft 4 in the direction indicated by the arrow a in Fig. 1, the geared connections with the shaft will cause that shaft to rotate reversely, or in the direction indicated by the arrow 6, in said figure.

The frame 2 is shown as being provided with a downwardly-projecting boss 49 which is bored to receive a stub-shaft 38. This shaft has a suitable shoulder to bear against the front portion of the boss 49 and is externally threaded at its rear end to receive a nut 40, which acts to draw the shoulder on the shaft against the boss and clamp the shaft to the boss. A curved work-supporting foot and guide 42, formed with a notch 43 to receive and properly position a tack relatively to the tack-pulling aws, has a rearwardly extending shank 41, which is bent upwardly; and perforated near its extremity to fit upon the threaded end of the shaft 38. As shown in Fig. 3, the perforated end of the shank 41 is interposed between the nut 40 and the rear face of the boss 49 to which it may be clamped by the nut when the latter is turned on the shaft 33 to secure said shaft in position in the boss. The shaft 38 extends toward the front of the machine and supports, for free oscillating movements, a bell-crank lever 35, which has a perforated hub 33 to fit the shaft, and a bell-crank lever 29, which likewise has a perforated hub 31 to fit the shaft, said hubs being retained in position on the end of shaft 38 by suitable means, as a washer 56 and screw 57.

As represented in Fig. 1, the arms of the levers 35 and 29 are of unequal lengths. The long arm of the lever 35 carries a cam roll 47 which enters the cam groove 46, while the short arm of the lever, at or near its extremity, is perforated to receive a freely turning stud 34 to which is secured an annulus having a peripherally projecting tack-engaging jaw 36, and a toothed gear 32 which is also fast on said stud. The annulus and gear are preferably arranged upon opposite sides, respectively, of the short arm of the lever The gear 32 meshes with a gear 24, turning freely on the shaft 38, and the gear 24 meshes with the wide gear 13, heretofore described. It will thus be seen that, through the described connections, when the driving shaft is rotated in the direction of the arrow a the gear 32, the stud 34, and 36 will be rotated in the direction indicated by the arrow to the left of the gear 32, in Fig. 1.

The long arm of the lever 29 carries a cam roll 51 which enters the cam groove 50, while the short arm of this lever, at or near its extremity, is perforated to receive a freely turning stud 28 to which is secured an annulus having a peripherally projecting'tack-engaging jaw 30, a toothed gear 26 being also fast'on said stud, the annulus and gear being, as shown, arranged upon opposite sides of the short arm of the lever 29. The gear 26 meshes with a gear 15, turning freely on the shaft 38 and shown in Fig. 3 as located by the side of the gear 24, and said gear 15 meshes with the gear 14, heretofore described. With this construction it will be seen that upon rotation of the driving shaft 4 in the direction indicated by the arrow a, the gear 26 will be caused to turn in the direction of the arrow shownto the right of said gear in Fig. 1, and thereby impart rotation in the same direction to the jaw 30. It will furthermore be seen that the jaws 30 and 36 will be caused to rotate in opposite directions, through the trains of gearing described, and simultaneously therewith the levers 35 and 29 will, through the cam rolls 47 and 51 and the cam grooves 46 and 50, be oscillated about an aXis located at the center of the shaft 38 to carry the jaws toward and from a line drawn vertically from the notch 43 in the guide 42, which corresponds with the position occupied by a tack to be ex tracted from a shoe, or other object, when the sameis presented to the machine. The number of teeth on the several gears of the train composed of the gears 6, 8, 14, .15 and 26, and the number of teeth on the several gears of the train composed of the gears 6, 8, 12, 13, 24 and 32, are so proportioned to each other that the jaws 36 and 42 will make one complete rotation for every r0 tation of the shafts 4 and 22, and the cam grooves areso designed that the arms of the levers 29 and 35 carrying the jaws will be alternately caused to approach each other and to" separate in proper timed relation to therotation of the jaws. The construction and arrangement of these parts are such finally return to position to engage another tack, the described cycle of operations being repeated in rapid succession as long as the machine continues in operation.

Referring to Fig. 1, it will be observed that as there shown each cam roll occupies a position at the outward limit of the throw of its cam groove, and the lower arms of the levers and the jaws carried thereby have consequently been moved toward each other adistance suflioient to cause the jaws to engage and grip a tack. Upon further rotation of the shafts 4 and 22 the action of the cam grooves upon the cam rolls will effect a rapid separation of the lower arms of the levers while the cams rotate through an angular distance of 90, or until the cam rolls reach the concentric portions of the cam grooves, during which period, also, the described geared connections will rotate the jaws in a direction to cause them to appreach each other. Each tack-pulling jaw has thus imparted to it a motion of translation as well as a motion of rotation which are so combined as to cause the extremities of the jaws then in engagement with the tack to rise vertically a distance suflicient to pull the'tack out of the shoe. The cam rolls having now entered the concentric portions of the cam grooves, the levers will remain at rest with their lower ends at the outward limits of their throw for a semi-rotation of the shafts 4 and 22, during which period the jaws will continue to rotate, will separate to release the tack, and move to positions still farther apart from each other. Following this operation the cam rolls will enter the eccentric portions of their grooves and be forced outwardly to cause a rapid approach of the jaws toward each other, said movement being accelerated by the turning inward of the jaws about their axes whereby they will move inwardly along the curved surface of the guide 42 until they again engage and grip a tack, and continue the operation in the manner above described for each tack to be extracted.

The center of oscillation of the levers 29 and 35 being coincident with the axis about which the gears 15 and 24: rotate, the gears 26 and 32 will roll over the gears 15 and 24, but will remain in meshing engagement therewith, as the jaws swing toward and from tack-engaging position. By reason of the fact, however, that the motion of translation of each jaw is in the same direction as that of its associated driving gear when the jaw is moving outwardly, while it is in the opposite direction thereto as the jaw is moving'inwardly, the speed of rotation of the jaws will be retarded in the former case,

but will be accelerated in the latter case.

This retardation of'the rotative movement of the jaws, together with the outward movement imparted thereto by the levers 29 and 35, servesto produce the simultaneous upward pulling movement of their tack-engagmg edges in a directlon substantially perpendlcular to the plane of the lnnersole,

."with the result that each tack is pulled directly from the shoe, and without any danger of tearing or otherwise in uring the upper or innersole.

- It is to be understood that, while the machine as herein shown and described represents a desirable construction for the embodiment of the principles of the present in- 1 vention, said invention is not in any sense to be considered as hunted thereto but may "beembodied in any construction for the performance of the operations described which falls within the scope of the following claims.

-' 'l-Iaving thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In. a tack pulling machine, the combination with a tack pulling member, of means for imparting a rotary tack pulling movement to the. member, and means for moving the member to cause the tack to be pulled in a straight line substantially perpendicular to the plane of the work.

' 2.'In a tackpulling machine, the combination with cooperating rotatory and 0scillatory tack-engaging members, of actuating mechanism therefor constructed and arranged to cause said members to engage and pull a tack. 3. In a tack-pulling machine, the combination with cooperating tack-pulling jaws, of actuating mechanism therefor constructed and arranged to impart to said jaws rotatory and oscillatory movementsto cause them to' engage a tack, to pull the tack in a direction substantially perpendicular to the plane of the work,'and to release the tack. 4c. In a tack-pulling machine, the combination with movable supports and 006perating rotatory tack-engaging jaws carried thereby, of mechanism for rotating the jaws and for moving the supports to cause said jaws to engage and pull a tack.

5. In a tack-pulling machine, the combination with pivotally supported levers, of rotatory tack-engaging jaws carried thereby, and mechanism for simultaneously imparting oscillatory movements to the lovers and rotatory movements to the jaws whereby said jaws are caused to engage and pull a tack.

6. In a tack-pulling machine, the combination of levers supported for movements about an axis, tack-engaging jaws rotatively supported thereby, means for oscillating the levers about said axis, and mechanism, in cluding gears supported for movements about the same axis, for imparting rotative movements to the jaws, the parts being so arranged that the jaws are caused to engage, pull, and release a tack.

7. Ina tack-pulling machine, the combination of levers supported for movements about an axis, a tack-engaging jaw rotatively supported by each lever and carrying a gear, mechanism, including gears supported for movements about said axis for imparting rotation in opposite directions to said first-mentioned gears, and means for oscillating said levers, the parts being so arranged that the jaws are caused to engage, pull, and release a tack.

S. In a tack pulling machine, the combination with oppositely acting devices arranged to grip a tack below the head, of actuating mechanism constructed and arranged to impart rotary and oscillating movements to said devices to cause them to engage and pull the tack.

9. In a tack pulling machine, the combination of jaws arranged to grip a tack between them, of means for imparting os= cillating and rotary movements to the jaws to cause them to engage, pull, and release a tack.

10.In a machine of the class described, the combination with cooperating jaws mounted for movements of rotation and "translation, of actuating means for imparting rotary tack pulling movements to the jaws, and movements of translation to cause the jaws to engage and release a tack.

11. In a machine of the class described, the combination with cooperating jaws mounted for movements of rotation about independent centers and also mounted for movements of translation about a common center, of actuating means for imparting said movements to the jaws to cause them to engage, pull, and release a tack.

12. A tack pulling machine having, in combination, a pair of tack pulling jaws arranged to swing about parallel axes, means for rotating the jaws to pull a tack, and mechanism for imparting a bodily movement to the axes of the jaws to cause the tack to be pulled in a straight line, substantially as described.

13. A tack pulling machine having, in combination, a pair of tack pulling jaws arranged to rotate in opposite directions about parallel axes, means for rotating the jaws to engage and pull a tack in a direction substantially perpendicular to the plane of the work, and mechanism for securing a relative movement of the axes of rotation to cause them to separate, substantially as described.

14. A tack pulling machine comprising a rotary tack pulling jaw, means for rotating the jaw, and mechanism for impartingia lateral movement to the axis of rotation. of the jaw to cause the jaw to pull the tack in a straight line, substantially as described.

15. A tack pulling machine having, in combination, a pair of cooperating tack pulling tools pivoted to move about parallel axes, and means for simultaneously rotating the tools in opposite directions about the axes to cause them to engage and pull a tack, substantially as described.

16. A tack pulling machine having, in combination, a pair of shafts arranged parallel to one another, a pair of cooperating tack pulling tools secured to the shafts and arranged to rotate in the same plane, and means for rotating the tools in opposite directions to cause them to engage and pull a tack in the plane of rotation of the tools, substantially as described.

17. A tack pulling machine comprising a tack pulling jaw and mechanism for imparting rotary and oscillatory movements to the jaw to cause the jaw to engage and pull a tack, substantially as described.

18. A tack pulling machine having, in combination, a pair of cooperating tack pulling jaws, and means for imparting rotary and oscillatory movements to one of the jaws to cause the tack to be engaged and pulled by the jaws, substantially as described.

In testimony whereof I ailix my signature in presence of two witnesses.

HARRY LYON. l/Vitnesses:

H. C. HOBART, Evnrm'r'r M. Arwoon.

Copies 01 this patent may be obtained for five cents each, by addressing the Commissioner of rate-11th, Washington. D. 0." 

